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郑煤集团公司老君堂煤矿是个技改矿井,原设计生产能力为15万t/a,改造后设计生产能力为21万t/a。在系统形成之初,采用一对立井提升,其中主井采用2JK-2/11.5双滚筒提升机,提升高度为330
The coal mine of Laojuntang of Zheng Coal Group Co., Ltd. is a technical improvement mine with original designed production capacity of 150,000 t / a and designed production capacity of 210,000 t / a after the renovation. At the beginning of the system, a pair of vertical shafts were used for lifting, of which 2JK-2 / 11.5 double cylinder hoists were used for the main shaft and the height was 330